Description

    FOSSIL SEED FERN PLATE
    Various genera
    Late Carboniferous, Pennsylvanian subperiod
    Llewellyn Formation, St Claire, Schuylkill Co., Pennsylvania, USA
    The seed ferns of Pennsylvania were instrumental in establishing the Carboniferous timeline of North America, their local abundance suggesting the name of the Pennsylvanian subperiod. Preserved in incredibly fragile shale, they are a fossil hound's nightmare to remove, but their superb appearance makes the effort worthwhile. This is a particularly fine, thin plate, 9¼ x 6¼ inches, by up to ⅜ inch thick. The fossils are highlighted with the characterful coating of white Pyrophyllite (the phyllosillicate mineral used in tailor's chalk). The patterns of the various fern genera leap in dramatic contrast from the dark gray shale, making for a rare, highly aesthetic, and extremely old fossil.


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    Auction Info

    Auction Dates
    May, 2012
    20th Sunday
    Bids + Registered Phone Bidders: 8
    Lot Tracking Activity: N/A
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